Paving-mixer construction



July 20 1926.

A. w. RYBECK ETA].

PAVING MIXER CONSTRUCTION 2 Sheets-Sheet 1 Filed Sept. 12 1924 witness a ger 671 July 20 1926. 1,593,037

A. W. RYBECK ET AL PAVING MIXER CONSTRUCTION Patented July 29, 1926.

UNITED STATES 1,593,037 PATENT OFFICE.

aDoLrrr w. RYBEGK, or MILWAUKEE, AND FEEDER-I0 a. BAGER. or sourri MILWAUKEE, wIsooNsIN, AssIGNon-s TO Tier. 1*. stirrer-r COMIAZIY, or MIL- WAUKEE, WISCONSIN, A CORPORATION or Wisconsin.

PAVING-MIXER CC'I TSTEUOTIQN.

Applioationfiled September 12,

This invention relates to a new and improved concrete mixer construction and more particularly to a construction whereby certain parts of the mixer may be temporarily moved for the purpose of reducing the clearance required by the machine.

The types of mixers now in general use, particularly those used for paving are of such size as to make it impossible for them to pass under some bridges or other overhead obstructions. This height of the mixer is desirable however, when the mixer is operating in order that a proper handling of the materials and proper distribution of the mixed concrete may be had.

It is an object of the present invention to provide a concrete mixer construction whereby certain parts of the mixer may be temporarily displaced for clearance pur poses.

It is a further object that a construction of this character may be readily added to existing types of mixers without material alteration therein.

It is an additional object to provide a construction of this character which is simple in design and operation and adapted for commercial production.

Other and further objects will appear as the description proceeds.

We have shown one preferred form of our construction in the accompanying drawings in which Figure 1 is a fragmentary face view of our construction applied to a mixer and- Figure 2 is a view of Figure 1 as seen from the left.

In the drawings the mixer drum is shown at 11 and the supporting frame for the mixer structure comprises the upright members 12, the diagonal members 13, the cross members 14: and the longitudinal members 15.

The shaft 16 is supported from the cross r members 14 by the bearings 17 which are removably secured to the members 14: by the bolts 18. This shaft 16 carries the drive pulley 19 and the pulleys 20 and 21 which are designed to handle the cables used in O hoisting the loading skip. The construction of the skip and associated parts is well known in the art and need not be further described herein, since it forms no part of the present invention.

Serial No. 32 ,303.

The arms 22 and 23 are provided at their upper ends with bearings 24 and 25 for the shaft 16. The lower ends of the arms 22 and 23 are pivoted to plates 26 secured to the diagonal frame members 13. These members 26 also carry cross members 27, which serve as stops to limit the downward swinging movement of the arms 22 and 23.

The U member 28 is pivotallrsecured adjacent the cross members 14. This member carries the drive shaft 29, which is fitted with the operating handle 30. The shaft 29 also carries the gear 31, which meshes with the larger gear 32, which latter is positively connected to the winch drum 33. The operating cable 34 has one ,end secured to the drum 33 and the other end is secured at 35 to the arm The supporting rod 36 has one downward end 37 fitting into a perforation in the longitudinal member 15. The other downturned end 38 of the rod 36 is removably fitted into a perforation in the upper end of the U member 28.

The winch and member 36 are normally in the position shown in dotted lines in Figure 2. The shaft 16 and associated parts are normally in the position in which they are shown in Figure 1 and in full lines in Figure 2. When it is desired to lower the shaft 16 the winch is raised to the full line position of Figure 2 and the end 38 of the member 36 inserted in lace. The bolts 18 are then removed thus reeing the bearings 17 from the transverse support 1 1. The shaft 16 may now be swung to the dotted line position of Figure 2. This movement can be accomplished by the application of manual force to swing the shaft over the center about the pivot points of the arms 22 and 23. The shaft is then eased down to its position by means of the winch and handle. The shaft is stopped at the desired point by the arms 22 and 23 and engaging the stop members 27 To return the shaft to its upper operative position the winch 33 is used to wind up the cable 3-1 and thus to draw the shaft to its position. The bolts 18 are then replaced to fixedly secure the bearings 17 and thereby to secure the sh aft. The member 36 is lifted to free the end 38 from its engagement of the U member 28, and the member 36 and the winch are swung down to the dotted line position of Figure 2.

It will be understood that this lowering of the shaft 16' will only take place at infrequent intervals when required to provide clearance for moving the mixer under overhead obstructions. During such movement the mixer is not operated and consequently the lowering of the shaft has no effect on operation of the mixer.

We have shown one preferred form of construction by way of illustration but it is to be understood that we contemplate such changes inodiiicatrlcns to meetvarying conditions as may come within the spirit and scope of the appended claims.

We claim: a

1. In a concrete mixer, a frame, a shaft normally supported on an upper portion of. the frame and arms engaging the shaft and pivotally connected to a lower portion of frame whereby the shaft may be moved to a lower position. by swinging said arms about said pivoted connection.

2'. In a concrete mixer, a frame, a shaft normally supported on an upper portion of the frame, arms engaging the shaft and pivotald'y connected to a lower portion. the frame whereby the shaft may be moved to a. lower position, by swinging said arms about said pivoted connection and a winch secured to the frame and having a cable connected to the shaft whereby the shaft may be raised to its normal position.

3. In a concrete mixer, a frame, a shaft, supports for the shaft removably secured to an upper portion of the frame, arms having bearings for the shaft at one end and having their otherends pivotally connected to a lower portion of the frame, a winch secured to the upper portion of the frame a cable from the Winch connected to one of said'arms adjacent the shaft.

&. In a. concrete mixer, a frame, a shaft, supports for the. shaft removably secured to an upper portion of the frame, arms having bearings. for the shaft at one end and having; their other ends pivctally connected. to a lower portion of the frame, a winch pivotally sup-ported 6151: the upper portion the frame, means to secure the winch in operative;positionabove the frame and a cable from. the winch operatively connected to the. shaft.

Signed at Milwaukee, Wisconsin this 9th 7 day of September, 1924.

V ADOLPH RYBEGK. 4

FREDERIC E. BAGER, SR. 

